O-Ring FEP with Silicone Core AS568 Dash Number 329 Actual Width 0.210 In. Actual Inside Dia 1.975 In. Outside Dia 2.395 In. Cross Section Shape Round Durometer Rating Hard Durometer 85 Shore A Nominal Width 3/16 In. Nominal Inside Dia 2 In. Nominal Outside Dia 2-3/8 In. Color Clear with Red Core Temp Range -75 Degrees to 400 Degrees F Meets/Exceeds ASTM D2116